]>
Commit | Line | Data |
---|---|---|
ba77c9e1 LZ |
1 | #include "builtin.h" |
2 | #include "perf.h" | |
3 | ||
0f7d2f1b | 4 | #include "util/evlist.h" |
fcf65bf1 | 5 | #include "util/evsel.h" |
ba77c9e1 LZ |
6 | #include "util/util.h" |
7 | #include "util/cache.h" | |
8 | #include "util/symbol.h" | |
9 | #include "util/thread.h" | |
10 | #include "util/header.h" | |
94c744b6 | 11 | #include "util/session.h" |
45694aa7 | 12 | #include "util/tool.h" |
ba77c9e1 LZ |
13 | |
14 | #include "util/parse-options.h" | |
15 | #include "util/trace-event.h" | |
16 | ||
17 | #include "util/debug.h" | |
ba77c9e1 LZ |
18 | |
19 | #include <linux/rbtree.h> | |
20 | ||
21 | struct alloc_stat; | |
22 | typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *); | |
23 | ||
ba77c9e1 LZ |
24 | static int alloc_flag; |
25 | static int caller_flag; | |
26 | ||
ba77c9e1 LZ |
27 | static int alloc_lines = -1; |
28 | static int caller_lines = -1; | |
29 | ||
7707b6b6 LZ |
30 | static bool raw_ip; |
31 | ||
7d0d3945 LZ |
32 | static int *cpunode_map; |
33 | static int max_cpu_num; | |
34 | ||
ba77c9e1 | 35 | struct alloc_stat { |
079d3f65 LZ |
36 | u64 call_site; |
37 | u64 ptr; | |
ba77c9e1 LZ |
38 | u64 bytes_req; |
39 | u64 bytes_alloc; | |
40 | u32 hit; | |
079d3f65 LZ |
41 | u32 pingpong; |
42 | ||
43 | short alloc_cpu; | |
ba77c9e1 LZ |
44 | |
45 | struct rb_node node; | |
46 | }; | |
47 | ||
48 | static struct rb_root root_alloc_stat; | |
49 | static struct rb_root root_alloc_sorted; | |
50 | static struct rb_root root_caller_stat; | |
51 | static struct rb_root root_caller_sorted; | |
52 | ||
53 | static unsigned long total_requested, total_allocated; | |
7d0d3945 | 54 | static unsigned long nr_allocs, nr_cross_allocs; |
ba77c9e1 | 55 | |
7d0d3945 LZ |
56 | #define PATH_SYS_NODE "/sys/devices/system/node" |
57 | ||
2814eb05 | 58 | static int init_cpunode_map(void) |
7d0d3945 LZ |
59 | { |
60 | FILE *fp; | |
2814eb05 | 61 | int i, err = -1; |
7d0d3945 LZ |
62 | |
63 | fp = fopen("/sys/devices/system/cpu/kernel_max", "r"); | |
64 | if (!fp) { | |
65 | max_cpu_num = 4096; | |
2814eb05 ACM |
66 | return 0; |
67 | } | |
68 | ||
69 | if (fscanf(fp, "%d", &max_cpu_num) < 1) { | |
70 | pr_err("Failed to read 'kernel_max' from sysfs"); | |
71 | goto out_close; | |
7d0d3945 LZ |
72 | } |
73 | ||
7d0d3945 LZ |
74 | max_cpu_num++; |
75 | ||
76 | cpunode_map = calloc(max_cpu_num, sizeof(int)); | |
2814eb05 ACM |
77 | if (!cpunode_map) { |
78 | pr_err("%s: calloc failed\n", __func__); | |
79 | goto out_close; | |
80 | } | |
81 | ||
7d0d3945 LZ |
82 | for (i = 0; i < max_cpu_num; i++) |
83 | cpunode_map[i] = -1; | |
2814eb05 ACM |
84 | |
85 | err = 0; | |
86 | out_close: | |
7d0d3945 | 87 | fclose(fp); |
2814eb05 | 88 | return err; |
7d0d3945 LZ |
89 | } |
90 | ||
2814eb05 | 91 | static int setup_cpunode_map(void) |
7d0d3945 LZ |
92 | { |
93 | struct dirent *dent1, *dent2; | |
94 | DIR *dir1, *dir2; | |
95 | unsigned int cpu, mem; | |
96 | char buf[PATH_MAX]; | |
97 | ||
2814eb05 ACM |
98 | if (init_cpunode_map()) |
99 | return -1; | |
7d0d3945 LZ |
100 | |
101 | dir1 = opendir(PATH_SYS_NODE); | |
102 | if (!dir1) | |
2814eb05 | 103 | return -1; |
7d0d3945 | 104 | |
659d8cfb UD |
105 | while ((dent1 = readdir(dir1)) != NULL) { |
106 | if (dent1->d_type != DT_DIR || | |
107 | sscanf(dent1->d_name, "node%u", &mem) < 1) | |
7d0d3945 LZ |
108 | continue; |
109 | ||
110 | snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name); | |
111 | dir2 = opendir(buf); | |
112 | if (!dir2) | |
113 | continue; | |
659d8cfb UD |
114 | while ((dent2 = readdir(dir2)) != NULL) { |
115 | if (dent2->d_type != DT_LNK || | |
116 | sscanf(dent2->d_name, "cpu%u", &cpu) < 1) | |
7d0d3945 LZ |
117 | continue; |
118 | cpunode_map[cpu] = mem; | |
119 | } | |
8442da1d | 120 | closedir(dir2); |
7d0d3945 | 121 | } |
8442da1d | 122 | closedir(dir1); |
2814eb05 | 123 | return 0; |
7d0d3945 LZ |
124 | } |
125 | ||
2814eb05 ACM |
126 | static int insert_alloc_stat(unsigned long call_site, unsigned long ptr, |
127 | int bytes_req, int bytes_alloc, int cpu) | |
ba77c9e1 LZ |
128 | { |
129 | struct rb_node **node = &root_alloc_stat.rb_node; | |
130 | struct rb_node *parent = NULL; | |
131 | struct alloc_stat *data = NULL; | |
132 | ||
ba77c9e1 LZ |
133 | while (*node) { |
134 | parent = *node; | |
135 | data = rb_entry(*node, struct alloc_stat, node); | |
136 | ||
137 | if (ptr > data->ptr) | |
138 | node = &(*node)->rb_right; | |
139 | else if (ptr < data->ptr) | |
140 | node = &(*node)->rb_left; | |
141 | else | |
142 | break; | |
143 | } | |
144 | ||
145 | if (data && data->ptr == ptr) { | |
146 | data->hit++; | |
147 | data->bytes_req += bytes_req; | |
4efb5290 | 148 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
149 | } else { |
150 | data = malloc(sizeof(*data)); | |
2814eb05 ACM |
151 | if (!data) { |
152 | pr_err("%s: malloc failed\n", __func__); | |
153 | return -1; | |
154 | } | |
ba77c9e1 | 155 | data->ptr = ptr; |
079d3f65 | 156 | data->pingpong = 0; |
ba77c9e1 LZ |
157 | data->hit = 1; |
158 | data->bytes_req = bytes_req; | |
159 | data->bytes_alloc = bytes_alloc; | |
160 | ||
161 | rb_link_node(&data->node, parent, node); | |
162 | rb_insert_color(&data->node, &root_alloc_stat); | |
163 | } | |
079d3f65 LZ |
164 | data->call_site = call_site; |
165 | data->alloc_cpu = cpu; | |
2814eb05 | 166 | return 0; |
ba77c9e1 LZ |
167 | } |
168 | ||
2814eb05 | 169 | static int insert_caller_stat(unsigned long call_site, |
ba77c9e1 LZ |
170 | int bytes_req, int bytes_alloc) |
171 | { | |
172 | struct rb_node **node = &root_caller_stat.rb_node; | |
173 | struct rb_node *parent = NULL; | |
174 | struct alloc_stat *data = NULL; | |
175 | ||
ba77c9e1 LZ |
176 | while (*node) { |
177 | parent = *node; | |
178 | data = rb_entry(*node, struct alloc_stat, node); | |
179 | ||
180 | if (call_site > data->call_site) | |
181 | node = &(*node)->rb_right; | |
182 | else if (call_site < data->call_site) | |
183 | node = &(*node)->rb_left; | |
184 | else | |
185 | break; | |
186 | } | |
187 | ||
188 | if (data && data->call_site == call_site) { | |
189 | data->hit++; | |
190 | data->bytes_req += bytes_req; | |
4efb5290 | 191 | data->bytes_alloc += bytes_alloc; |
ba77c9e1 LZ |
192 | } else { |
193 | data = malloc(sizeof(*data)); | |
2814eb05 ACM |
194 | if (!data) { |
195 | pr_err("%s: malloc failed\n", __func__); | |
196 | return -1; | |
197 | } | |
ba77c9e1 | 198 | data->call_site = call_site; |
079d3f65 | 199 | data->pingpong = 0; |
ba77c9e1 LZ |
200 | data->hit = 1; |
201 | data->bytes_req = bytes_req; | |
202 | data->bytes_alloc = bytes_alloc; | |
203 | ||
204 | rb_link_node(&data->node, parent, node); | |
205 | rb_insert_color(&data->node, &root_caller_stat); | |
206 | } | |
2814eb05 ACM |
207 | |
208 | return 0; | |
ba77c9e1 LZ |
209 | } |
210 | ||
2814eb05 | 211 | static int perf_evsel__process_alloc_event(struct perf_evsel *evsel, |
0f7d2f1b | 212 | struct perf_sample *sample) |
ba77c9e1 | 213 | { |
0f7d2f1b ACM |
214 | unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"), |
215 | call_site = perf_evsel__intval(evsel, sample, "call_site"); | |
216 | int bytes_req = perf_evsel__intval(evsel, sample, "bytes_req"), | |
217 | bytes_alloc = perf_evsel__intval(evsel, sample, "bytes_alloc"); | |
218 | ||
219 | if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, sample->cpu) || | |
2814eb05 ACM |
220 | insert_caller_stat(call_site, bytes_req, bytes_alloc)) |
221 | return -1; | |
ba77c9e1 LZ |
222 | |
223 | total_requested += bytes_req; | |
224 | total_allocated += bytes_alloc; | |
7d0d3945 | 225 | |
0f7d2f1b ACM |
226 | nr_allocs++; |
227 | return 0; | |
228 | } | |
229 | ||
230 | static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel, | |
231 | struct perf_sample *sample) | |
232 | { | |
233 | int ret = perf_evsel__process_alloc_event(evsel, sample); | |
234 | ||
235 | if (!ret) { | |
236 | int node1 = cpunode_map[sample->cpu], | |
237 | node2 = perf_evsel__intval(evsel, sample, "node"); | |
238 | ||
7d0d3945 LZ |
239 | if (node1 != node2) |
240 | nr_cross_allocs++; | |
241 | } | |
0f7d2f1b ACM |
242 | |
243 | return ret; | |
ba77c9e1 LZ |
244 | } |
245 | ||
079d3f65 LZ |
246 | static int ptr_cmp(struct alloc_stat *, struct alloc_stat *); |
247 | static int callsite_cmp(struct alloc_stat *, struct alloc_stat *); | |
248 | ||
249 | static struct alloc_stat *search_alloc_stat(unsigned long ptr, | |
250 | unsigned long call_site, | |
251 | struct rb_root *root, | |
252 | sort_fn_t sort_fn) | |
253 | { | |
254 | struct rb_node *node = root->rb_node; | |
255 | struct alloc_stat key = { .ptr = ptr, .call_site = call_site }; | |
256 | ||
257 | while (node) { | |
258 | struct alloc_stat *data; | |
259 | int cmp; | |
260 | ||
261 | data = rb_entry(node, struct alloc_stat, node); | |
262 | ||
263 | cmp = sort_fn(&key, data); | |
264 | if (cmp < 0) | |
265 | node = node->rb_left; | |
266 | else if (cmp > 0) | |
267 | node = node->rb_right; | |
268 | else | |
269 | return data; | |
270 | } | |
271 | return NULL; | |
272 | } | |
273 | ||
2814eb05 ACM |
274 | static int perf_evsel__process_free_event(struct perf_evsel *evsel, |
275 | struct perf_sample *sample) | |
ba77c9e1 | 276 | { |
0f7d2f1b | 277 | unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"); |
079d3f65 LZ |
278 | struct alloc_stat *s_alloc, *s_caller; |
279 | ||
079d3f65 LZ |
280 | s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp); |
281 | if (!s_alloc) | |
2814eb05 | 282 | return 0; |
079d3f65 | 283 | |
22ad798c | 284 | if ((short)sample->cpu != s_alloc->alloc_cpu) { |
079d3f65 LZ |
285 | s_alloc->pingpong++; |
286 | ||
287 | s_caller = search_alloc_stat(0, s_alloc->call_site, | |
288 | &root_caller_stat, callsite_cmp); | |
2814eb05 ACM |
289 | if (!s_caller) |
290 | return -1; | |
079d3f65 LZ |
291 | s_caller->pingpong++; |
292 | } | |
293 | s_alloc->alloc_cpu = -1; | |
2814eb05 ACM |
294 | |
295 | return 0; | |
ba77c9e1 LZ |
296 | } |
297 | ||
0f7d2f1b ACM |
298 | typedef int (*tracepoint_handler)(struct perf_evsel *evsel, |
299 | struct perf_sample *sample); | |
ba77c9e1 | 300 | |
1d037ca1 | 301 | static int process_sample_event(struct perf_tool *tool __maybe_unused, |
d20deb64 | 302 | union perf_event *event, |
8115d60c | 303 | struct perf_sample *sample, |
fcf65bf1 | 304 | struct perf_evsel *evsel, |
743eb868 | 305 | struct machine *machine) |
ba77c9e1 | 306 | { |
743eb868 | 307 | struct thread *thread = machine__findnew_thread(machine, event->ip.pid); |
ba77c9e1 | 308 | |
ba77c9e1 LZ |
309 | if (thread == NULL) { |
310 | pr_debug("problem processing %d event, skipping it.\n", | |
311 | event->header.type); | |
312 | return -1; | |
313 | } | |
314 | ||
315 | dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); | |
316 | ||
0f7d2f1b ACM |
317 | if (evsel->handler.func != NULL) { |
318 | tracepoint_handler f = evsel->handler.func; | |
319 | return f(evsel, sample); | |
320 | } | |
321 | ||
322 | return 0; | |
ba77c9e1 LZ |
323 | } |
324 | ||
fcf65bf1 ACM |
325 | static struct perf_tool perf_kmem = { |
326 | .sample = process_sample_event, | |
327 | .comm = perf_event__process_comm, | |
328 | .ordered_samples = true, | |
ba77c9e1 LZ |
329 | }; |
330 | ||
ba77c9e1 LZ |
331 | static double fragmentation(unsigned long n_req, unsigned long n_alloc) |
332 | { | |
333 | if (n_alloc == 0) | |
334 | return 0.0; | |
335 | else | |
336 | return 100.0 - (100.0 * n_req / n_alloc); | |
337 | } | |
338 | ||
4aa65636 ACM |
339 | static void __print_result(struct rb_root *root, struct perf_session *session, |
340 | int n_lines, int is_caller) | |
ba77c9e1 LZ |
341 | { |
342 | struct rb_node *next; | |
23346f21 | 343 | struct machine *machine; |
ba77c9e1 | 344 | |
079d3f65 LZ |
345 | printf("%.102s\n", graph_dotted_line); |
346 | printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr"); | |
47103277 | 347 | printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n"); |
079d3f65 | 348 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
349 | |
350 | next = rb_first(root); | |
351 | ||
23346f21 ACM |
352 | machine = perf_session__find_host_machine(session); |
353 | if (!machine) { | |
a1645ce1 ZY |
354 | pr_err("__print_result: couldn't find kernel information\n"); |
355 | return; | |
356 | } | |
ba77c9e1 | 357 | while (next && n_lines--) { |
1b145ae5 ACM |
358 | struct alloc_stat *data = rb_entry(next, struct alloc_stat, |
359 | node); | |
360 | struct symbol *sym = NULL; | |
71cf8b8f | 361 | struct map *map; |
079d3f65 | 362 | char buf[BUFSIZ]; |
1b145ae5 ACM |
363 | u64 addr; |
364 | ||
365 | if (is_caller) { | |
366 | addr = data->call_site; | |
7707b6b6 | 367 | if (!raw_ip) |
5c0541d5 | 368 | sym = machine__find_kernel_function(machine, addr, &map, NULL); |
1b145ae5 ACM |
369 | } else |
370 | addr = data->ptr; | |
371 | ||
372 | if (sym != NULL) | |
9486aa38 | 373 | snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name, |
71cf8b8f | 374 | addr - map->unmap_ip(map, sym->start)); |
1b145ae5 | 375 | else |
9486aa38 | 376 | snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr); |
079d3f65 | 377 | printf(" %-34s |", buf); |
ba77c9e1 | 378 | |
47103277 | 379 | printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n", |
079d3f65 | 380 | (unsigned long long)data->bytes_alloc, |
ba77c9e1 LZ |
381 | (unsigned long)data->bytes_alloc / data->hit, |
382 | (unsigned long long)data->bytes_req, | |
383 | (unsigned long)data->bytes_req / data->hit, | |
384 | (unsigned long)data->hit, | |
079d3f65 | 385 | (unsigned long)data->pingpong, |
ba77c9e1 LZ |
386 | fragmentation(data->bytes_req, data->bytes_alloc)); |
387 | ||
388 | next = rb_next(next); | |
389 | } | |
390 | ||
391 | if (n_lines == -1) | |
079d3f65 | 392 | printf(" ... | ... | ... | ... | ... | ... \n"); |
ba77c9e1 | 393 | |
079d3f65 | 394 | printf("%.102s\n", graph_dotted_line); |
ba77c9e1 LZ |
395 | } |
396 | ||
397 | static void print_summary(void) | |
398 | { | |
399 | printf("\nSUMMARY\n=======\n"); | |
400 | printf("Total bytes requested: %lu\n", total_requested); | |
401 | printf("Total bytes allocated: %lu\n", total_allocated); | |
402 | printf("Total bytes wasted on internal fragmentation: %lu\n", | |
403 | total_allocated - total_requested); | |
404 | printf("Internal fragmentation: %f%%\n", | |
405 | fragmentation(total_requested, total_allocated)); | |
7d0d3945 | 406 | printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs); |
ba77c9e1 LZ |
407 | } |
408 | ||
4aa65636 | 409 | static void print_result(struct perf_session *session) |
ba77c9e1 LZ |
410 | { |
411 | if (caller_flag) | |
4aa65636 | 412 | __print_result(&root_caller_sorted, session, caller_lines, 1); |
ba77c9e1 | 413 | if (alloc_flag) |
4aa65636 | 414 | __print_result(&root_alloc_sorted, session, alloc_lines, 0); |
ba77c9e1 LZ |
415 | print_summary(); |
416 | } | |
417 | ||
29b3e152 LZ |
418 | struct sort_dimension { |
419 | const char name[20]; | |
420 | sort_fn_t cmp; | |
421 | struct list_head list; | |
422 | }; | |
423 | ||
424 | static LIST_HEAD(caller_sort); | |
425 | static LIST_HEAD(alloc_sort); | |
426 | ||
ba77c9e1 | 427 | static void sort_insert(struct rb_root *root, struct alloc_stat *data, |
29b3e152 | 428 | struct list_head *sort_list) |
ba77c9e1 LZ |
429 | { |
430 | struct rb_node **new = &(root->rb_node); | |
431 | struct rb_node *parent = NULL; | |
29b3e152 | 432 | struct sort_dimension *sort; |
ba77c9e1 LZ |
433 | |
434 | while (*new) { | |
435 | struct alloc_stat *this; | |
29b3e152 | 436 | int cmp = 0; |
ba77c9e1 LZ |
437 | |
438 | this = rb_entry(*new, struct alloc_stat, node); | |
439 | parent = *new; | |
440 | ||
29b3e152 LZ |
441 | list_for_each_entry(sort, sort_list, list) { |
442 | cmp = sort->cmp(data, this); | |
443 | if (cmp) | |
444 | break; | |
445 | } | |
ba77c9e1 LZ |
446 | |
447 | if (cmp > 0) | |
448 | new = &((*new)->rb_left); | |
449 | else | |
450 | new = &((*new)->rb_right); | |
451 | } | |
452 | ||
453 | rb_link_node(&data->node, parent, new); | |
454 | rb_insert_color(&data->node, root); | |
455 | } | |
456 | ||
457 | static void __sort_result(struct rb_root *root, struct rb_root *root_sorted, | |
29b3e152 | 458 | struct list_head *sort_list) |
ba77c9e1 LZ |
459 | { |
460 | struct rb_node *node; | |
461 | struct alloc_stat *data; | |
462 | ||
463 | for (;;) { | |
464 | node = rb_first(root); | |
465 | if (!node) | |
466 | break; | |
467 | ||
468 | rb_erase(node, root); | |
469 | data = rb_entry(node, struct alloc_stat, node); | |
29b3e152 | 470 | sort_insert(root_sorted, data, sort_list); |
ba77c9e1 LZ |
471 | } |
472 | } | |
473 | ||
474 | static void sort_result(void) | |
475 | { | |
29b3e152 LZ |
476 | __sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort); |
477 | __sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort); | |
ba77c9e1 LZ |
478 | } |
479 | ||
0433ffbe | 480 | static int __cmd_kmem(const char *input_name) |
ba77c9e1 | 481 | { |
d549c769 | 482 | int err = -EINVAL; |
da378962 | 483 | struct perf_session *session; |
0f7d2f1b ACM |
484 | const struct perf_evsel_str_handler kmem_tracepoints[] = { |
485 | { "kmem:kmalloc", perf_evsel__process_alloc_event, }, | |
486 | { "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, }, | |
487 | { "kmem:kmalloc_node", perf_evsel__process_alloc_node_event, }, | |
488 | { "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, }, | |
489 | { "kmem:kfree", perf_evsel__process_free_event, }, | |
490 | { "kmem:kmem_cache_free", perf_evsel__process_free_event, }, | |
491 | }; | |
da378962 | 492 | |
fcf65bf1 | 493 | session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_kmem); |
4aa65636 ACM |
494 | if (session == NULL) |
495 | return -ENOMEM; | |
496 | ||
e727ca73 ACM |
497 | if (perf_session__create_kernel_maps(session) < 0) |
498 | goto out_delete; | |
499 | ||
d549c769 ACM |
500 | if (!perf_session__has_traces(session, "kmem record")) |
501 | goto out_delete; | |
502 | ||
0f7d2f1b ACM |
503 | if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) { |
504 | pr_err("Initializing perf session tracepoint handlers failed\n"); | |
505 | return -1; | |
506 | } | |
507 | ||
ba77c9e1 | 508 | setup_pager(); |
fcf65bf1 | 509 | err = perf_session__process_events(session, &perf_kmem); |
4aa65636 ACM |
510 | if (err != 0) |
511 | goto out_delete; | |
ba77c9e1 | 512 | sort_result(); |
4aa65636 ACM |
513 | print_result(session); |
514 | out_delete: | |
515 | perf_session__delete(session); | |
516 | return err; | |
ba77c9e1 LZ |
517 | } |
518 | ||
ba77c9e1 LZ |
519 | static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r) |
520 | { | |
521 | if (l->ptr < r->ptr) | |
522 | return -1; | |
523 | else if (l->ptr > r->ptr) | |
524 | return 1; | |
525 | return 0; | |
526 | } | |
527 | ||
29b3e152 LZ |
528 | static struct sort_dimension ptr_sort_dimension = { |
529 | .name = "ptr", | |
530 | .cmp = ptr_cmp, | |
531 | }; | |
532 | ||
ba77c9e1 LZ |
533 | static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r) |
534 | { | |
535 | if (l->call_site < r->call_site) | |
536 | return -1; | |
537 | else if (l->call_site > r->call_site) | |
538 | return 1; | |
539 | return 0; | |
540 | } | |
541 | ||
29b3e152 LZ |
542 | static struct sort_dimension callsite_sort_dimension = { |
543 | .name = "callsite", | |
544 | .cmp = callsite_cmp, | |
545 | }; | |
546 | ||
f3ced7cd PE |
547 | static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r) |
548 | { | |
549 | if (l->hit < r->hit) | |
550 | return -1; | |
551 | else if (l->hit > r->hit) | |
552 | return 1; | |
553 | return 0; | |
554 | } | |
555 | ||
29b3e152 LZ |
556 | static struct sort_dimension hit_sort_dimension = { |
557 | .name = "hit", | |
558 | .cmp = hit_cmp, | |
559 | }; | |
560 | ||
ba77c9e1 LZ |
561 | static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r) |
562 | { | |
563 | if (l->bytes_alloc < r->bytes_alloc) | |
564 | return -1; | |
565 | else if (l->bytes_alloc > r->bytes_alloc) | |
566 | return 1; | |
567 | return 0; | |
568 | } | |
569 | ||
29b3e152 LZ |
570 | static struct sort_dimension bytes_sort_dimension = { |
571 | .name = "bytes", | |
572 | .cmp = bytes_cmp, | |
573 | }; | |
574 | ||
f3ced7cd PE |
575 | static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r) |
576 | { | |
577 | double x, y; | |
578 | ||
579 | x = fragmentation(l->bytes_req, l->bytes_alloc); | |
580 | y = fragmentation(r->bytes_req, r->bytes_alloc); | |
581 | ||
582 | if (x < y) | |
583 | return -1; | |
584 | else if (x > y) | |
585 | return 1; | |
586 | return 0; | |
587 | } | |
588 | ||
29b3e152 LZ |
589 | static struct sort_dimension frag_sort_dimension = { |
590 | .name = "frag", | |
591 | .cmp = frag_cmp, | |
592 | }; | |
593 | ||
079d3f65 LZ |
594 | static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r) |
595 | { | |
596 | if (l->pingpong < r->pingpong) | |
597 | return -1; | |
598 | else if (l->pingpong > r->pingpong) | |
599 | return 1; | |
600 | return 0; | |
601 | } | |
602 | ||
603 | static struct sort_dimension pingpong_sort_dimension = { | |
604 | .name = "pingpong", | |
605 | .cmp = pingpong_cmp, | |
606 | }; | |
607 | ||
29b3e152 LZ |
608 | static struct sort_dimension *avail_sorts[] = { |
609 | &ptr_sort_dimension, | |
610 | &callsite_sort_dimension, | |
611 | &hit_sort_dimension, | |
612 | &bytes_sort_dimension, | |
613 | &frag_sort_dimension, | |
079d3f65 | 614 | &pingpong_sort_dimension, |
29b3e152 LZ |
615 | }; |
616 | ||
617 | #define NUM_AVAIL_SORTS \ | |
618 | (int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *)) | |
619 | ||
620 | static int sort_dimension__add(const char *tok, struct list_head *list) | |
621 | { | |
622 | struct sort_dimension *sort; | |
623 | int i; | |
624 | ||
625 | for (i = 0; i < NUM_AVAIL_SORTS; i++) { | |
626 | if (!strcmp(avail_sorts[i]->name, tok)) { | |
627 | sort = malloc(sizeof(*sort)); | |
2814eb05 ACM |
628 | if (!sort) { |
629 | pr_err("%s: malloc failed\n", __func__); | |
630 | return -1; | |
631 | } | |
29b3e152 LZ |
632 | memcpy(sort, avail_sorts[i], sizeof(*sort)); |
633 | list_add_tail(&sort->list, list); | |
634 | return 0; | |
635 | } | |
636 | } | |
637 | ||
638 | return -1; | |
639 | } | |
640 | ||
641 | static int setup_sorting(struct list_head *sort_list, const char *arg) | |
642 | { | |
643 | char *tok; | |
644 | char *str = strdup(arg); | |
645 | ||
2814eb05 ACM |
646 | if (!str) { |
647 | pr_err("%s: strdup failed\n", __func__); | |
648 | return -1; | |
649 | } | |
29b3e152 LZ |
650 | |
651 | while (true) { | |
652 | tok = strsep(&str, ","); | |
653 | if (!tok) | |
654 | break; | |
655 | if (sort_dimension__add(tok, sort_list) < 0) { | |
656 | error("Unknown --sort key: '%s'", tok); | |
1b22859d | 657 | free(str); |
29b3e152 LZ |
658 | return -1; |
659 | } | |
660 | } | |
661 | ||
662 | free(str); | |
663 | return 0; | |
664 | } | |
665 | ||
1d037ca1 IT |
666 | static int parse_sort_opt(const struct option *opt __maybe_unused, |
667 | const char *arg, int unset __maybe_unused) | |
ba77c9e1 | 668 | { |
ba77c9e1 LZ |
669 | if (!arg) |
670 | return -1; | |
671 | ||
ba77c9e1 | 672 | if (caller_flag > alloc_flag) |
29b3e152 | 673 | return setup_sorting(&caller_sort, arg); |
ba77c9e1 | 674 | else |
29b3e152 | 675 | return setup_sorting(&alloc_sort, arg); |
ba77c9e1 LZ |
676 | |
677 | return 0; | |
678 | } | |
679 | ||
1d037ca1 IT |
680 | static int parse_caller_opt(const struct option *opt __maybe_unused, |
681 | const char *arg __maybe_unused, | |
682 | int unset __maybe_unused) | |
ba77c9e1 | 683 | { |
90b86a9f LZ |
684 | caller_flag = (alloc_flag + 1); |
685 | return 0; | |
686 | } | |
ba77c9e1 | 687 | |
1d037ca1 IT |
688 | static int parse_alloc_opt(const struct option *opt __maybe_unused, |
689 | const char *arg __maybe_unused, | |
690 | int unset __maybe_unused) | |
90b86a9f LZ |
691 | { |
692 | alloc_flag = (caller_flag + 1); | |
ba77c9e1 LZ |
693 | return 0; |
694 | } | |
695 | ||
1d037ca1 IT |
696 | static int parse_line_opt(const struct option *opt __maybe_unused, |
697 | const char *arg, int unset __maybe_unused) | |
ba77c9e1 LZ |
698 | { |
699 | int lines; | |
700 | ||
701 | if (!arg) | |
702 | return -1; | |
703 | ||
704 | lines = strtoul(arg, NULL, 10); | |
705 | ||
706 | if (caller_flag > alloc_flag) | |
707 | caller_lines = lines; | |
708 | else | |
709 | alloc_lines = lines; | |
710 | ||
711 | return 0; | |
712 | } | |
713 | ||
0433ffbe ACM |
714 | static int __cmd_record(int argc, const char **argv) |
715 | { | |
716 | const char * const record_args[] = { | |
717 | "record", "-a", "-R", "-f", "-c", "1", | |
ba77c9e1 LZ |
718 | "-e", "kmem:kmalloc", |
719 | "-e", "kmem:kmalloc_node", | |
720 | "-e", "kmem:kfree", | |
721 | "-e", "kmem:kmem_cache_alloc", | |
722 | "-e", "kmem:kmem_cache_alloc_node", | |
723 | "-e", "kmem:kmem_cache_free", | |
0433ffbe | 724 | }; |
ba77c9e1 LZ |
725 | unsigned int rec_argc, i, j; |
726 | const char **rec_argv; | |
727 | ||
728 | rec_argc = ARRAY_SIZE(record_args) + argc - 1; | |
729 | rec_argv = calloc(rec_argc + 1, sizeof(char *)); | |
730 | ||
ce47dc56 CS |
731 | if (rec_argv == NULL) |
732 | return -ENOMEM; | |
733 | ||
ba77c9e1 LZ |
734 | for (i = 0; i < ARRAY_SIZE(record_args); i++) |
735 | rec_argv[i] = strdup(record_args[i]); | |
736 | ||
737 | for (j = 1; j < (unsigned int)argc; j++, i++) | |
738 | rec_argv[i] = argv[j]; | |
739 | ||
740 | return cmd_record(i, rec_argv, NULL); | |
741 | } | |
742 | ||
1d037ca1 | 743 | int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused) |
ba77c9e1 | 744 | { |
0433ffbe ACM |
745 | const char * const default_sort_order = "frag,hit,bytes"; |
746 | const char *input_name = NULL; | |
747 | const struct option kmem_options[] = { | |
748 | OPT_STRING('i', "input", &input_name, "file", "input file name"), | |
749 | OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL, | |
750 | "show per-callsite statistics", parse_caller_opt), | |
751 | OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL, | |
752 | "show per-allocation statistics", parse_alloc_opt), | |
753 | OPT_CALLBACK('s', "sort", NULL, "key[,key2...]", | |
754 | "sort by keys: ptr, call_site, bytes, hit, pingpong, frag", | |
755 | parse_sort_opt), | |
756 | OPT_CALLBACK('l', "line", NULL, "num", "show n lines", parse_line_opt), | |
757 | OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"), | |
758 | OPT_END() | |
759 | }; | |
760 | const char * const kmem_usage[] = { | |
761 | "perf kmem [<options>] {record|stat}", | |
762 | NULL | |
763 | }; | |
ba77c9e1 LZ |
764 | argc = parse_options(argc, argv, kmem_options, kmem_usage, 0); |
765 | ||
90b86a9f | 766 | if (!argc) |
ba77c9e1 LZ |
767 | usage_with_options(kmem_usage, kmem_options); |
768 | ||
655000e7 ACM |
769 | symbol__init(); |
770 | ||
90b86a9f LZ |
771 | if (!strncmp(argv[0], "rec", 3)) { |
772 | return __cmd_record(argc, argv); | |
773 | } else if (!strcmp(argv[0], "stat")) { | |
2814eb05 ACM |
774 | if (setup_cpunode_map()) |
775 | return -1; | |
90b86a9f LZ |
776 | |
777 | if (list_empty(&caller_sort)) | |
778 | setup_sorting(&caller_sort, default_sort_order); | |
779 | if (list_empty(&alloc_sort)) | |
780 | setup_sorting(&alloc_sort, default_sort_order); | |
ba77c9e1 | 781 | |
0433ffbe | 782 | return __cmd_kmem(input_name); |
b00eca8c PE |
783 | } else |
784 | usage_with_options(kmem_usage, kmem_options); | |
7d0d3945 | 785 | |
90b86a9f | 786 | return 0; |
ba77c9e1 LZ |
787 | } |
788 |